1) external structure that is used in bows  a) horsehair b) horseleg c) intestine 2) some invertebrates have an ........................that supports their body a) skeleton b) exoskeleton c) heart 3) a hard external structure that protect the soft body underneath is a) skeleton b) exoskeleton 4) snails have shells that act as away of ..... a) hibernation b) camouflage c) water evaporation 5) how does the exoskeleton help this animal a) reduce water loss b) protect the wings underneath c) helps from aquatic environment they live in 6) this animal has a shell that is a water proof and can help it survive at aquatic environment a) crab b) ladybugs c) snails 7) how does the skin of rhino can protect its body a) they have thick skin to protect from sun light and insects b) they have thin skin to survive at cool dark soil 8) sharp pointy structure on the feet that carry, capture, tear other animals a) claws b) fur c) scale 9) what is the external structure that protects an insulate the body of reptiles a) scales  b) feathers c) fur 10) what is the purpose of birds feathers a) protects against temperature change b) help the bird to fly c) a and b 11) mole rats have .......... because they live underground a) rough skin b) soft thin skin 12) a quality or traits ........ a) exoskeleton b) extinct c) characteristic 13) what does male tree frog do to look for mate  a) they croak loudly b) they jump high c) they hibernate 14) female tree frog is attracted to ..... a) the lowest male croak sound b) the loudest male croak sound 15) what is one external structure that is common in all lobsters a) nails b) claws 16) which claw is used to catch prey a) the crusher claw b) pincher claw 17) which claw opens the shell of the prey a) the crusher b) the pincher 18) which one is the larger claw a) the crusher b) the pincher  19) animals with exoskeleton do what to grow and change ? a) shed (molt) their exoskeleton  b) hibernating 20) what does the praying mantis do in this photo a) shed its exoskeleton b) reproduce c) digesting food 21) what might happen if some animals didn't shed their exoskeleton a) animal wont grow much, exoskeleton squeeze it  b) they will live more years

grade 4 lesson 4 external structure and function of animals

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